CVE-2020-10885: tp-link ac1750_firmware Improper Input Validation

Vulnerability summary

CVE-2020-10885 is a critical (CVSS 9.8) Improper Input Validation vulnerability in tp-link ac1750_firmware. EPSS estimates a 6.53% chance of exploitation in the next 30 days, higher than 93.7% of scored vulnerabilities.

Timeline

1. 25-03-2020
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1750 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of DNS responses. The issue results from the lack of proper validation of DNS reponses prior to further processing. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the root user. Was ZDI-CAN-9661.

• CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.